Umicore

Umicore Korea, Ltd.

Syensqo Sa

Dae-Hyun Kim

Jens M Paulsen

TaeHyeon Yang

Shinichi Kumakura

JiHye Kim

Liang Zhu

Areum Park

YuRi Lee

Hee-Sung Gil

Maxime Blangero

Randy De Palma

Daniël Nelis

Eric Robert

Jean-Sébastien Bridel

JinDoo Oh

HyeJeong Yang

Dirk Vanhoutte

Hae-Young Kim

Hyuncheol Lee

Moon-Hyung Choi

Lawrence Alan Hough

Mi-Soon Oh

Ji-Hye Won

Jihye Kim

Jindoo Oh

Yuri Lee

Taehyeon Yang

Hyejeong Yang

A liquid electrolyte lithium secondary battery cell comprising: —a positive electrode material comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, −0.025≤a≤0.025, 0.18≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.625, x+y+z=1 and k≤0.01; and—an electrolyte composition comprising: a) at least one cyclic carbonate, b) at least one fluorinated acyclic carboxylic acid ester, c) at least one electrolyte salt, d) at least one lithium compound selected from lithium phosphate compounds, lithium boron compounds, lithium sulfonate compounds and mixtures thereof, e) at least one cyclic sulfur compound, and f) optionally at least one cyclic carboxylic acid anhydride.

Ni based lithium-ion secondary battery comprising a fluorinated electrolyte

The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, with −0.025≤a≤0.025, 0.15≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.300, x+y+z=1 and k≤0.01. Different embodiments provide the following features: the lithium transition metal-based oxide powder has a carbon content ≤1000 ppm or even ≤400 ppm; the lithium transition metal-based oxide powder has a sulfur content between 0.05 and 1.0 wt %; and a dopant A is Zr, and the powder further comprises up to 1 wt % of a coating comprising a boron compound and WO.

Ni based cathode material for rechargeable lithium-ion batteries

The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, with −0.025≤a≤0.025, 0.15≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.300, x+y+z=1 and k≤0.01. Different embodiments provide the following features:

A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50≤1.5. The second powder comprises a material B having single crystal particles, said particles having a general formula LiN'O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, wherein M″ is one or both of Mn or Al, and E is a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has a D50 between 2 and 4.5 μm. The weight ratio of the second powder in the mixture is between 15 and 60 wt %.

Positive electrode material for rechargeable lithium ion batteries

A method for preparing a powderous positive electrode material comprising single crystal monolithic particles and having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05 is described. The method comprises providing a mixture comprising a Ni- and Co- bearing precursor and a Li bearing precursor, subjecting the mixture to a multiple step sintering process whereby in the final sintering step a sintered lithiated intermediate material is obtained comprising agglomerated primary particles having a primary particle size distribution with a D50 between 2.0 and 8.0 μm, subjecting the lithiated intermediate material to a wet ball milling step to deagglomerate the agglomerated primary particles and obtain a slurry comprising deagglomerated primary particles, separating the deagglomerated primary particles from the slurry, and heat treating the deagglomerated primary particles at a temperature between 300° C. and at least 20° C. below the temperature in the final sintering step.

Methods for preparing positive electrode material for rechargeable lithium ion batteries

A bimodal lithium transition metal oxide based powder mixture comprising a first and a second lithium transition metal oxide based powder. The first powder comprises a material A having a layered crystal structure comprising the elements Li, a transition metal based composition M and oxygen and has a particle size distribution with a span <1.0. The second powder has a monolithic morphology and a general formula LiN′O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, with M″ being one or both of Mn or Al, and E being a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has an average particle size D50 between 2 and 4 μm. The weight ratio of the second powder in the bimodal mixture is between 20 and 60 wt %.

A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50<1.0. The second powder comprises a material B having single crystal particles, said particles having a general formula LiN′O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, wherein M″ is one or both of Mn or Al, and E is a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has a D50 between 2 and 4 μm. The weight ratio of the second powder in the mixture is between 15 and 60 wt %.

This invention relates to an industrial process of manufacturing hydroxide precursor for lithium transition metal oxide used in secondary lithium ion batteries. More particularly, this process utilizes highly concentrated nitrate salts and is designed to mitigate waste production.

Nitrate process for manufacturing transition metal hydroxide precursors

A method for manufacturing a cobalt based hydroxide carbonate compound having a malachite-rosasite mineral structure, comprising the steps of:

Precursors of cathode materials for a rechargeable lithium ion battery

A method for preparing a positive electrode material for a rechargeable lithium battery, comprising the steps of: &#x2014;providing a Li metal (M) oxide electroactive material, &#x2014;providing an inorganic oxidizing chemical compound, &#x2014;providing a chemical that is a Li-acceptor, &#x2014;mixing the Li metal (M) oxide, the oxidizing compound and the Li-acceptor, and &#x2014;heating the mixture at a temperature between 200 and 800&#xb0; C. in an oxygen comprising atmosphere. In an embodiment the positive electrode material comprises a Li metal (M) oxide electroactive material, and between 0.15 and 5 wt % of a LiNaS04 secondary phase. The Li metal oxide may have the general formula LiMO, with a'&#x3c;a and 0.9&#x2264;(1+a&#x2032;)/(1&#x2212;a)&#x2264;1.15, and M=NiM&#x2032;xCo, with M&#x2032;=MnAI, 0&#x2264;z&#x2264;1, 0.1&#x2264;y&#x2264;0.4 and x+y&#x2264;0.5.

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Cheonan, South Korea

Dae-Hyun Kim